How is the polar vortex affecting middle America and the eastern United States?

The polar vortex is bringing freezing conditions with ice, cold temperatures, and snow across middle America and extending into the eastern United States. Millions of Americans from Minneapolis to Dallas are experiencing record low temperatures, with Dallas seeing temperatures as low as 19°F and wind chills making it feel like 2°F. Residents are bundling up and navigating slick, icy roads, though many are choosing to stay home altogether. The severe weather is causing school closures and raising concerns about Texas's energy grid due to unusually high demand. This significant weather event is uncharacteristic for February and is expected to continue with more cold spells predicted.